Feature Comparison Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V

Feature Comparison Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
Feature
Comparison
Windows Server 2008 R2 Hyper-V and
Windows Server 2012 Hyper-V
Contents
Introduction ............................................................................... 4
More Secure Multitenancy ..................................................... 5
Flexible Infrastructure .............................................................. 9
Scale, Performance, and Density ....................................... 13
High Availability ..................................................................... 18
Processor and Memory Support ....................................... 24
Network ................................................................................... 24
Storage ..................................................................................... 25
Manageability ......................................................................... 25
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
2
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Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
3
Introduction
The following tables compare selected features of Windows Server 2008 R2 Hyper-V and Windows Server
2012 Hyper-V. The tables include comments about each version’s performance, as well as a notation
about how well each feature is supported. The legend for this notation is as follows:
Level of Feature Support
Feature is supported
Feature is only partially supported
Feature is not supported
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
4
More Secure Multitenancy
Helps to ensure that each customer’s data is completely separate and secure from other customers’
information.
Feature
Multitenant
security and
isolation
Private virtual
local area
network
(LAN), or
PVLAN
Windows Server
2008 R2 Hyper-V
Server virtualization
provides isolation
between virtual machines.
However, the network
layer of the datacenter is
not fully isolated, and
Layer 2 connectivity is
implied between different
workloads that are
running over the same
infrastructure.
This feature is not
supported.
Windows Server
2012 Hyper-V
Server virtualization
provides a fully isolated
network layer of the
datacenter through
programmatically
managed and extensible
capabilities. This enables
connection to the
network of virtual
machines with policy
enforcement for security
and isolation.
PVLANs allow Hyper-V
administrators to isolate
virtual machines from
each other (for example,
virtual machines cannot
contact other virtual
machines over the
network), while still
maintaining external
network connectivity for
all virtual machines.
Value Statement
Provides flexibility to
restrict access to a virtual
machine on any node
while maintaining
isolation of the network
and storage traffic.
Provides enhanced
security and isolation of
customers’ networks from
one another.
Increases virtual machine
isolation in a multitenant
environment, while not
degrading access to
public network resources.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
5
Feature
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
DHCP guard
Value Statement
Protects against rogue
DHCP servers.
This feature is not
supported.
DHCP guard drops server
messages from
unauthorized virtual
machines that are acting
as DHCP servers.
DHCP server traffic from
other virtual switch ports
is automatically dropped.
Router guard
This feature is not
supported.
Hyper-V
Extensible
Switch
This feature is not
supported.
Router guard drops
router advertisement and
redirection messages
from unauthorized virtual
machines that are acting
as routers.
The Hyper-V Extensible
Switch is a Layer 2 virtual
network switch that
provides
programmatically
managed and extensible
capabilities to connect
virtual machines to the
physical network. The
Hyper-V Extensible
Switch is an open
platform that lets vendors
provide extensions
written to standard
Windows application
programming interface
(API) frameworks.
Provides better security
and an authorization
check for virtual
machines.
Provides an open
platform for partners’
plug-ins. Unified
management, easier
support, and core
services for extensions
are provided without
charge. For example, all
extensions have live
migration support by
default, and no special
coding for services is
required.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
6
Feature
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
Extension
monitoring
This feature is not
supported.
Multiple monitoring and
filtering extensions can
be supported at the
entrance and outlet
portions of the Hyper-V
Extensible Switch.
Extension
uniqueness
This feature is not
supported.
Extensions
that learn life
cycle of
virtual
machines
Extensions
that prohibit
state changes
This feature is not
supported.
This feature is not
supported.
Extension
state/configuration is
unique to each instance
of a Hyper-V Extensible
Switch on a machine.
These extensions can
learn the flow of network
traffic based on the
workload life cycle of
virtual machines.
These extensions can
better ensure security by
identifying harmful state
changes. The extensions
can stop these state
changes from being
implemented, while
allowing features for
monitoring and security
to be launched.
Value Statement
Provides traffic visibility
at different layers and
enables statistical traffic
data to be gathered.
Provides enhanced
security through a unique
extension state.
Optimizes the virtual
network for greater
performance.
Provides flexibility to
improve performance,
management, and
diagnostics.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
7
Feature
Multiple
extensions on
same switch
Windows Server
2008 R2 Hyper-V
This feature is not
supported.
Windows Server
2012 Hyper-V
Multiple extensions can
coexist on the same
Hyper-V Extensible
Switch.
Value Statement
Provides a cost-effective
solution with better
manageability and
security.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
8
Flexible Infrastructure
Makes it easier and faster to add and move servers.
Feature
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
Network
virtualization
Virtual LANs (VLANs) are
used to isolate networks,
but they are very complex
to manage on a large
scale.
Hyper-V Network
Virtualization helps to
isolate network traffic on
a shared infrastructure
without the need to use
VLANs. It also allows
users to move virtual
machines, as needed,
within a virtual
infrastructure while
preserving virtual
network assignments.
Value Statement
Helps to achieve
maximum performance
with no new hardware
(servers, switches, or
appliances).
Network Virtualization
eliminates hierarchical IP
address assignments
across virtual machines.
A virtual machine can be
placed on any node,
regardless of IP address,
even across the cloud.
IP address
rewrite
This feature is not
supported.
Each virtual machine
customer address (CA) is
mapped to a unique host
provider address (PA).
Hyper-V Network
Virtualization uses IP
address rewrite to map
the CA to the PA.
Eliminates the need to
upgrade network
adapters, switches, or
appliances.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
9
Feature
Generic
Routing
Encapsulation
Windows Server
2008 R2 Hyper-V
This feature is not
supported.
Windows Server
2012 Hyper-V
Hyper-V Network
Virtualization uses
Generic Routing
Encapsulation (GRE) IP
packets to map a virtual
network to a physical
network. It can use as few
as one IP address per
host.
Live
migration
Windows Server 2008 R2
introduced the Live
Migration feature, which
permits users to move a
running virtual machine
from one physical
computer to another with
no downtime—assuming
that the virtual machine is
clustered.
Windows Server 2012
Hyper-V provides the
ability to migrate virtual
machines, with support
for simultaneous live
migrations. That is, users
can move several virtual
machines at the same
time.
Value Statement
Enables better
performance by reducing
the burden on the
switches.
Provides faster and
simultaneous migration.
Provides dynamic
mobility of virtual
machines across the
datacenter.
Live migrations are not
limited to a cluster.
Virtual machines can be
migrated across cluster
boundaries, and between
stand-alone servers that
are not part of a cluster.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
10
Feature
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
Live storage
migration
A virtual machine’s
storage can be moved
only while the virtual
machine is shut down.
Live storage migration
allows users to move
virtual hard disks that are
attached to a running
virtual machine.
Value Statement
Provides better flexibility
and control while
managing storage in a
cloud environment.
Provides flexibility to
move virtual hard disks
without downtime.
Users can transfer virtual
hard disks to a new
location for upgrading or
migrating storage,
performing back-end
storage maintenance, or
redistributing the storage
load.
Importing
virtual
machines
A virtual machine’s files
that are to be imported
can be duplicated and
imported at another time.
With the Import Wizard,
users can quickly and
reliably import virtual
machines from one server
to another. The Import
Wizard detects and fixes
problems and does not
require a virtual machine
to be exported.
Merging
snapshots
In Hyper-V 2008 R2,
merging a snapshot into
a parent virtual machine
requires the virtual
machine to be turned off
for the entirety of the
merge operation.
The Hyper-V Live Merge
feature allows users to
merge snapshots back
into the virtual machine
while it continues to run.
Provides a simpler, more
streamlined way to
import or copy virtual
machines.
Provides flexibility to
manage snapshots while
a virtual machine is
running.
Minimizes use of space
for virtual machines with
snapshots.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
11
Feature
Automation
support for
Hyper-V
Windows Server
2008 R2 Hyper-V
Writing scripts for HyperV with in-box tools
requires Windows
Management
Instrumentation (WMI)
knowledge. That is,
development skills are
needed.
Windows Server
2012 Hyper-V
Automation support
consists of more than 150
built-in Hyper-V cmdlets
for Microsoft Windows
PowerShell. With these
cmdlets, users can
perform all available tasks
in Hyper-V Manager, as
well as several tasks
exclusively in Windows
PowerShell.
Value Statement
Eliminates the need for
development skills to
perform automation
support tasks.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
12
Scale, Performance, and
Density
Increases the scalability of the datacenter and uses fewer servers to run more virtual machine workloads.
Feature
Hyper-V host
and workload
support
Non-Uniform
Memory
Access
(NUMA)
support
inside virtual
machines
Windows Server
2008 R2 Hyper-V
Users can configure up to
64 logical processors on
hardware, 1 TB of
physical memory, 4
virtual processors, and up
to 64 GB of memory on a
virtual machine. Up to 16
nodes and 1,000 virtual
machines in a cluster also
can be supported.
This feature is not
supported.
Windows Server
2012 Hyper-V
Users can configure up to
320 logical processors on
hardware, 4 TB of
physical memory, 64
virtual processors, and up
to 1 TB of memory on a
virtual machine. Up to 64
nodes and 8,000 virtual
machines in a cluster also
can be supported.
A NUMA topology can be
projected onto a virtual
machine, and guest
operating systems and
applications can make
intelligent NUMA
decisions.
Value Statement
Improves performance
and maximizes the use of
processors and memory.
Provides enhanced
performance on large
virtual machines by
enabling the guest
operation system and
applications to access
local memory faster than
remote memory.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
13
Feature
Support for
Single Root
I/O
Virtualization
(SR-IOV)
networking
devices
Dynamic
Memory,
startup
memory, and
minimum
memory
Windows Server
2008 R2 Hyper-V
This feature is not
supported.
Virtual machines are
assigned extra memory
because Hyper-V cannot
reclaim the memory from
them after startup.
Windows Server
2012 Hyper-V
Windows Server 2012
Hyper-V enables support
for SR-IOV-capable
network devices and
allows the SR-IOV virtual
function of a physical
network adapter to be
assigned directly to a
virtual machine.
Windows Server 2012
Hyper-V can reclaim the
unused memory from
virtual machines with a
minimum memory value
lower than their startup
value.
Hyper-V
smart paging
This feature is not
supported.
If a virtual machine is
configured with a lower
minimum memory than
its startup memory and
Hyper-V needs additional
memory to restart it,
Hyper-V smart paging is
used to bridge the gap
between minimum and
startup memory.
Value Statement
Reduces network latency
and host CPU overhead
(for processing network
traffic); increases network
throughput.
Enables the consolidation
of more virtual machines,
especially in Virtual
Desktop Infrastructure
(VDI) environments.
Provides a reliable way to
keep virtual machines
running when there is not
enough physical memory
available.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
14
Feature
Runtime
memory
configuration
Resource
Metering in
Hyper-V
Windows Server
2008 R2 Hyper-V
This feature is not
supported.
Windows Server
2012 Hyper-V
Users can make
configuration changes to
Dynamic Memory
(increase maximum
memory or decrease
minimum memory) when
a virtual machine is
running.
Value Statement
Provides flexibility to use
Dynamic Memory as
needed, without affecting
other virtual machines.
Enables users to track the
use of virtual machines.
This feature is not
supported.
Resource Metering allows
users to track how many
CPU, memory, storage,
and network resources
are consumed by a virtual
machine over time. This
information is gathered
automatically (without
the need to constantly
collect data from the
virtual machine) and
persists with the virtual
machine through live
migration/other mobility
operations.
Windows Server 2012
Hyper-V can track and
report the amount of
data transferred per IP
address or virtual
machine.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
15
Feature
Virtual hard
disk format
(VHDX)
Offloaded
data transfer
support
Data Center
Bridging
(DCB)
Windows Server
2008 R2 Hyper-V
This feature is not
supported.
This feature is not
supported.
This feature is not
supported.
Windows Server
2012 Hyper-V
VHDX supports up to 64
TB of storage. It helps to
provide protection from
corruption due to power
failures by logging
updates to the VHDX
metadata structures. It
also helps to prevent
performance degradation
on large-sector physical
disks by optimizing
structure alignment.
Windows Server 2012
Hyper-V uses SAN copy
offload to copy large
amounts of data from
one location to another.
Windows Server 2012
Hyper-V uses DCBcapable hardware to
converge multiple types
of network traffic onto a
single network adapter,
with a maximum level of
service to each.
Value Statement
Helps to ensure highquality performance on
large-sector disks.
Allows the CPU to
concentrate on the
processing needs of an
application.
Provides rapid
provisioning and
migration of virtual
machines.
Helps to reduce the cost
and complexity of
maintaining separate
traffic for network,
management, live
migration, and storage.
Makes it easy to change
allocations to different
traffic flows.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
16
Feature
Virtual Fibre
Channel in
Hyper-V
Multipath I/O
(MPIO)
functionality
for Fibre
Channel
storage
within a
virtual
machine
Support for
4 KB disk
sectors in
Hyper-V
virtual hard
disks
Quality of
Service (QoS)
minimum
bandwidth
Windows Server
2008 R2 Hyper-V
This feature is not
supported.
Windows Server
2012 Hyper-V
Virtual Fibre Channel in
Hyper-V provides Fibre
Channel ports within the
guest operating system.
Value Statement
Enables Fibre Channel to
connect directly from
within virtual machines.
Helps to ensure highly
available connectivity.
This feature is not
supported.
This feature is not
supported.
This feature is not
supported.
Windows Server 2012
Hyper-V uses MPIO
functionality for proper
connectivity to Fibre
Channel storage within a
virtual machine.
Windows Server 2012
Hyper-V supports 4 KB
disk sectors. This reduces
the impact of 512e disks
on the virtual hard disk
stack.
Windows Server 2012
Hyper-V uses minimum
bandwidth to assign
specific bandwidth for
each type of traffic and to
ensure fair sharing during
congestion.
Uses emerging
innovation in storage
hardware to increase
capacity and reliability.
Enables hosting providers
and enterprises to deliver
services with predictable
network performance to
virtual machines on
servers running Hyper-V.
Reduces the need for
expensive network
adapters.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
17
High Availability
Increases customers’ resilience to failures in the datacenter.
Feature
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
Backup
capability
Value Statement
Reduces backup size and
cost.
Data can be preserved by
performing full-file
backups. There are two
methods for this:
 Back up the virtual
machine and
snapshots as flat files
when offline.
 Use Windows Server
or third-party tools to
back up the virtual
machine itself, with a
normal backup of the
operating system and
data.
Windows Server 2012
Hyper-V supports
incremental backup of
virtual hard disks while
the virtual machine is
running:
Saves network bandwidth
and disk space.
 During each
incremental backup,
only the differences
are backed up.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
18
Feature
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
Disaster
recovery
Support is provided for
disaster recovery within IT
environments and across
datacenters, using
geographically dispersed
clustering capabilities.
Failover clustering is used
with hardware-based
SAN replication across
datacenters. This
approach is used to
prevent the outage of an
entire datacenter, but it is
typically expensive.
Asynchronous replication
of virtual machines occurs
over a network link from
one Hyper-V host at a
primary site to another
Hyper-V host at a replica
site. It also can restore
the system from an
unplanned shutdown.
Value Statement
Offers an affordable, inbox business continuity
and disaster recovery
solution.
Provides the ability to
quickly recover business
functions during
downtime, with minimal
or no data loss.
Delivers failure recovery
in minutes.
In the event of failure
(power outage, fire, or
natural disaster) at the
primary site,
administrators can
manually fail over
production virtual
machines to the Hyper-V
server at the recovery
site.
During failover, virtual
machines are brought
back to a consistent point
in time, and they can be
accessed by the rest of
the network within
minutes.
This version of Hyper-V is
an affordable, reliable
business continuity
solution that can help to
restore data at a remote
site.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
19
Feature
Network
Interface Card
(NIC)
Teaming
for load
balancing
and failover
(LBFO)
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
Value Statement
Provides higher reliability
against network failure.
Hyper-V 2008 R2 uses
network adapter teaming,
a third-party technology
that provides fault
tolerance for multiple
network adapters.
Windows Server 2012
Hyper-V provides built-in
support for NIC Teaming:
A virtual machine can
have virtual network
adapters that are
connected to more than
one virtual switch. If a
network adapter under
that virtual switch is
disconnected, it still has
connectivity. NIC
Teaming supports up to
32 network adapters in a
team.
Hyper-V
clustering
Hyper-V 2008 R2 has
specific features, like
failover clustering and
clustered live migration,
that are related to HyperV clustering. These
features are described
later in this table.
Windows Server 2012
Hyper-V provides
protection against
application and service
failure, and system and
hardware failure.
Guest
clustering
Guest clustering is
supported by using iSCSI.
Workloads can be
virtualized by directly
accessing cluster guest
operating systems and
storage over Fibre
Channel or through iSCSI.
Increases availability and
enables access to serverbased applications during
planned and unplanned
downtime.
Provides the ability to
connect Fibre Channel
directly from within
virtual machines.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
20
Feature
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
live
migration
The Live Migration
feature requires the
Failover Clustering
feature to be added and
configured on servers
running Hyper-V. HyperV and failover clustering
can be used together to
make a virtual machine
highly available.
Encrypted
cluster
volumes
Cluster
Shared
Volume (CSV)
2.0
This feature is not
supported.
This feature is not
supported.
Live migrations in a
clustered environment
can use higher network
bandwidths (up to 10
GB). Administrators can
perform multiple
simultaneous live
migrations.
Microsoft BitLockerencrypted cluster disks
provide security for
deployment outside the
secure datacenter. They
also provide a safeguard
for the cloud.
Windows Server 2012
Hyper-V can integrate
with storage arrays for
replication and hardware
snapshots out of the box.
Value Statement
Provides quicker
migration by using higher
network bandwidth.
Enhances physical
security for deployment
outside the secure
datacenter.
Simplifies the
configuration and
operation of virtual
machines.
Provides greater security
and enhanced
performance.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
21
Feature
Windows Server
2008 R2 Hyper-V
Windows Server
2012 Hyper-V
Application
monitoring
This feature is not
supported.
In-box live
migration
queuing
Virtual
machine
failover
prioritization
This feature is not
supported.
The health of key services
provided by virtual
machines can be
monitored. If an issue is
detected, automatic
corrective action can be
initiated. Such action
includes restarting a
virtual machine or
moving it to a different
Hyper-V server. This
provides higher
availability to workloads
that do not support
clustering.
Administrators can
perform large, multiselect
actions to queue live
migrations of multiple
virtual machines.
Value Statement
Provides monitoring for
services and event logs
inside virtual machines.
Reduces the risk and
impact of various issues.
For administrators, helps
to save time and improve
efficiency.
Ensures the availability of
critical virtual machines.
Administrators can
configure the preference
for node order on
failover.
Administrators can
configure priorities to
control the order of
virtual machine failover.
Lower priority virtual
machines automatically
release resources if they
are needed for higher
priority virtual machines.
Provides optimum
resource use by ensuring
resource availability for
high-priority virtual
machines.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
22
Feature
Affinity
virtual
machine rules
Anti-affinity
virtual
machine rules
Windows Server
2008 R2 Hyper-V
Administrators can
configure a preference
that attempts to keep a
designated virtual
machine off the same
node as similar virtual
machines.
This feature is not
supported.
Windows Server
2012 Hyper-V
Administrators can
configure partnered
virtual machines to
migrate simultaneously at
failover.
Administrators can
specify that two virtual
machines cannot coexist
on the same node in a
failover scenario.
Value Statement
Migrates partnered
virtual machines at
failover.
Ensures selected
migrated virtual machines
do not reside on the
same node in a failover.
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
23
Processor and Memory
Support
Processor/Memory Feature
Windows Server 2008 R2 Windows Server 2012
Logical processors on hardware
64
320
Physical memory
1 TB
4 TB
Virtual processors per host
512
2,048
Virtual processors per virtual
machine
4
64
Memory per virtual machine
64 GB
1 TB
Active virtual machines
384
1,024
Maximum cluster nodes
16
64
Maximum cluster virtual
machines
1,000
8,000
Network
Network Feature
Windows Server 2008 R2
Windows Server 2012
NIC Teaming
Yes, through partners
Yes, Windows NIC Teaming in box
VLAN Tagging
Yes
Yes
MAC spoofing protection
Yes, with R2 SP1
Yes
ARP spoofing protection
Yes, with R2 SP1
Yes
SR-IOV networking
No
Yes
Network QoS
No
Yes
Network metering
No
Yes
Network monitor modes
No
Yes
IPsec task offload
No
Yes
VM Trunk Mode
No
Yes
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
24
Storage
Storage Feature
Windows Server 2008 R2 Windows Server 2012
Live storage migration
No, quick storage migration
through System Center Virtual
Machine Manager
Yes, with no limits (as many as
the hardware will allow)
Virtual machines on file storage
No
Yes, Server Message Block 3.0
(SMB3)
Guest Fibre Channel
No
Yes
Virtual disk format
VHD up to 2 TB
VHD up to 2 TB
VHDX up to 64 TB
Virtual machine guest clustering
Yes, through iSCSI
Yes, through iSCSI, Fibre
Channel, or Fibre Channel over
Ethernet (FCoE)
Native 4 KB disk support
No
Yes
Live virtual hard disk merge
No, offline
Yes
Live new parent
No
Yes
Secure offloaded data transfer
No
Yes
Manageability
Manageability Feature
Windows Server 2008 R2 Windows Server 2012
Hyper-V PowerShell
No
Yes
Network PowerShell
No
Yes
Storage PowerShell
No
Yes
REST APIs
No
Yes
SCONFIG
Yes
Yes
Enable/Disable shell
No, server core at operating
system setup
Yes
VMConnect support for RemoteFX
No
Yes
Feature Comparison: Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V
25
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